Question: When did Kwame Nkruman hold the position as Prime Minister of Ghana?
Paraphrase: Kwame Nkruman was Prime Minister of Ghana during what years?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q8620 p:P39 ?s . ?s ps:P39 wd:Q3657870 . ?s pq:P582 ?value}